Many new entries have been added to the Complete 9/11 Timeline at History Commons, covering a range of topics relating to the terrorist attacks of September 11, 2001.

Contradictory Orders over Whether People Should Evacuate the WTC

Numerous entries examine the conflicting orders and announcements that were made, regarding whether people should evacuate or stay in the World Trade Center after the first plane hit the North Tower.

After the crash, George Tabeek, a WTC security manager, contacted the deputy fire safety directors in the Twin Towers with instructions to “evacuate the North Tower, but keep people inside the South Tower.” But around the same time, some people in the North Tower heard an automated announcement advising them to stay in their offices.